# Is it true that parent/child concept slows down QPS?

**URL:** <https://discuss.elastic.co/t/is-it-true-that-parent-child-concept-slows-down-qps/29576>\
**Category:** Elasticsearch\
**Created:** [September 18, 2015, 2:19pm UTC](https://discuss.elastic.co/t/is-it-true-that-parent-child-concept-slows-down-qps/29576 "2015-09-18T14:19:47Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![N\_M\_10](https://avatars.discourse-cdn.com/v4/letter/n/f19dbf/32.png) [@N\_M\_10](https://discuss.elastic.co/u/N_M_10)\
**Post date:** [September 18, 2015, 2:19pm UTC](https://discuss.elastic.co/t/is-it-true-that-parent-child-concept-slows-down-qps/29576/1 "2015-09-18T14:19:47Z")

</div>

Hi,

Is it true that parent/child concept slows down QPS (Query Per Second) count ?

Currently my Query looks something like this.

```
    {
  "query": {
    "filtered": {
      "query": {
        "bool": {
          "should": [
            {
              "query_string": {
                "fields": [
                  "Title.title^4",
                  "Title.ngrams_front^2",
                  "Title.ngrams_back"
                ],
                "defaultOperator": "or",
                "analyzer": "titles_default_analyzer",
                "query": "man"
              }
            },
            {
              "fuzzy": {
                "Title.title": {
                  "value": "man",
                  "boost": 1,
                  "min_similarity": 0.5,
                  "max_expansions": 20,
                  "prefix_length": 0
                }
              }
            }
          ]
        }
      },
      "filter": {
        "and": [
          {
            "terms": {
              "Tags": [
                "MUMBAI",
                "rall"
              ]
            }
          },
          {
            "terms": {
              "Status": [
                "NS",
                "CS"
              ]
            }
          }
        ]
      }
    }
  }
}
```

---

<div class="post-metadata">

**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [September 19, 2015, 1:58am UTC](https://discuss.elastic.co/t/is-it-true-that-parent-child-concept-slows-down-qps/29576/2 "2015-09-19T01:58:13Z")

</div>

> [@N\_M\_10](#):
>
> Is it true that parent/child concept slows down QPS (Query Per Second) count ?

Why, are you having issues?

---

<div class="post-metadata">

**Author:** ![N\_M\_10](https://avatars.discourse-cdn.com/v4/letter/n/f19dbf/32.png) [@N\_M\_10](https://discuss.elastic.co/u/N_M_10)\
**Post date:** [October 2, 2015, 10:34am UTC](https://discuss.elastic.co/t/is-it-true-that-parent-child-concept-slows-down-qps/29576/3 "2015-10-02T10:34:12Z")

</div>

We wanted to try that, but not compromising the QPS count.

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 5, 2017, 11:47pm UTC](https://discuss.elastic.co/t/is-it-true-that-parent-child-concept-slows-down-qps/29576/4 "2017-07-05T23:47:04Z")

</div>